MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Metallurgy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The capacity of the vertical extrusion press is more than the horizontal extrusion press. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
For manufacturing short length hollow tube, the best suited method is _____________ |
| A. | direct extrusion |
| B. | indirect extrusion |
| C. | impact extrusion |
| D. | die forging |
| Answer» D. die forging | |
| 3. |
The lead sheath electrical cable is made by which of the following process? |
| A. | Wire drawing |
| B. | Forging |
| C. | Rolling |
| D. | Extrusion |
| Answer» E. | |
| 4. |
For the tube drawing by the extrusion process, the necessary component required is _____ |
| A. | die |
| B. | ram |
| C. | mandrel |
| D. | billet |
| Answer» D. billet | |
| 5. |
The maximum stress/force that can be applied on the billet is more in indirect extrusion compared to direct extrusion. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
If the bar of diameter 60 mm is drawn to a diameter of 30 mm in the metalworking process, find the equivalent strain in the material? |
| A. | ln2 |
| B. | ln3 |
| C. | ln4 |
| D. | 2 |
| Answer» B. ln3 | |
| 7. |
The equivalent strain ε for plastic deformation is defined as ____________ (where E=equivalent strain, r=reduction ratio). |
| A. | E=ln(r) |
| B. | E=ln(1-r) |
| C. | E=ln(1/(1-r)) |
| D. | E=ln(1/r) |
| Answer» D. E=ln(1/r) | |
| 8. |
The fir-tree cracking is associate which of the following metal working process? |
| A. | Forging |
| B. | Rolling |
| C. | Extrusion |
| D. | Casting |
| Answer» D. Casting | |
| 9. |
The pressure required to maintain the flow during indirect extrusion __________ with decreasing length of the billet. |
| A. | increases |
| B. | decreases |
| C. | remains the same |
| D. | independent of length |
| Answer» C. remains the same | |
| 10. |
If the drawing ratio of the cup is 1.5 and the final diameter of the workpiece is 120 mm, find the diameter of the blank? |
| A. | 150 mm |
| B. | 180 mm |
| C. | 100 mm |
| D. | 240 mm |
| Answer» C. 100 mm | |
| 11. |
If the effective flow stress for extrusion is 100 MPa and the extrusion ratio is 4, then find the ideal extrusion pressure for the process? |
| A. | 150.5 MPa |
| B. | 170.5 MPa |
| C. | 138.6 MPa |
| D. | 257.2 MPa |
| Answer» D. 257.2 MPa | |